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CVE-2026-87886

Not yet rated Exploited in the wild (KEV)

Not yet rated — under the NVD policy in effect since April 2026, most CVEs are no longer analyzed immediately. The EPSS score (if available) is still shown.

Confirmed active exploitation — CISA KEV catalog

Name
Acronis Backup Incorrect Default Permissions Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Description

Local privilege escalation due to insecure file permissions. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Backup extension for Plesk (Linux) before build 1.8.11.638, Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.3.238.

Metrics

EPSS — exploit probability
0% (percentile: 14) as of 1 November 2026
CWE
CWE-276

Affected products

acronis: acronis backup; linux: linux kernel

References